AQA Level 1/2 CertificateJune 2013
Chemistry 8402/2
Paper 2Monday 10 June 2013 1.30 pm to 3.00 pm
For this paper you must have:

a ruler

a calculator

the periodic table (enclosed).
Time allowed
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1 hour 30 minutes
Instructions

Use black ink or black ball-point pen.
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Fill in the boxes at the top of this page.

Answer
all
questions.

You must answer the questions in the spaces provided. Do not write outside the box around each page or on blank pages.
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Do all rough work in this book. Cross through any work you do not want to be marked.
Information
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The marks for questions are shown in brackets.
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The maximum mark for this paper is 90.
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You are expected to use a calculator where appropriate.
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You are reminded of the need for good English and clear presentation in your answers.
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Question 3(d) should be answered in continuous prose.In this question you will be marked on your ability to: – use good English – organise information clearly – use specialist vocabulary where appropriate.
Advice
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In all calculations, show clearly how you work out your answer.
8402/2
(Jun138402201)
G/T94288 6/6/6/6/6
Centre NumberCandidate Number SurnameOther NamesCandidate SignatureFor Examiner’s UseExaminer’s InitialsQuestionMark
123456TOTAL
2
Do not write outside the box
(02)
G/T94288/Jun13/8402/2
Answer
all
questions in the spaces provided.
1
Saturated hydrocarbons, for example methane and octane, are often used as fuels.
1 (a)
Methane can be represented as:
HCHHH
1 (a) (i)
The formula of methane is ............................................... .
(1 mark)
1 (a) (ii)
Draw a ring around the correct answer to complete the sentence.
In a saturated hydrocarbon molecule all of the bonds are double.ionic.single.
(1 mark)
1 (a) (iii)
Draw a ring around the correct answer to complete the sentence.
The homologous series that contains methane and octane is called the alcohols.alkanes.alkenes.
(1 mark)
1 (b) (i)
The complete combustion of petrol produces carbon dioxide, water vapour and sulfur dioxide. Name
three
elements petrol must contain. 1 ......................................................................................................................................... 2 ......................................................................................................................................... 3 .........................................................................................................................................
(3 marks)
3
Do not write outside the box
(03)
G/T94288/Jun13/8402/2
Turn over

1 (b) (ii)
The exhaust gases from cars can contain oxides of nitrogen. Complete the sentence. Nitrogen in the oxides of nitrogen comes from ................................................................ .
(1 mark)
1 (b) (iii)
The sulfur dioxide and oxides of nitrogen from cars cause an environmental problem. Name the problem and describe
one
effect of the problem. Name of problem ............................................................................................................... Effect of problem ............................................................................................................... ............................................................................................................................................
(2 marks)
1 (c)
When a fuel burns without enough oxygen, there is incomplete combustion. One gaseous product of incomplete combustion is carbon monoxide. Name
one
solid product of incomplete combustion. ................................................................................
(1 mark)
Question 1 continues on the next page
4
Do not write outside the box
(04)
G/T94288/Jun13/8402/2
1 (d)
A student investigated how well different hydrocarbon fuels would heat up 100 g of water. Her hypothesis was:
The more carbon atoms there are in a molecule of any fuel, the better the fuel is.
The apparatus the student used is shown in the diagram.
Hydrocarbon fuel100
g of water Calorimeter Thermometer Spirit burner
She burned each hydrocarbon fuel for 2 minutes. Her results are shown in the table.
Name of hydrocarbon fuelNumber of carbon atoms in a molecule of hydrocarbon fuelTemperature change of water in
°
C after 2 minutesTemperature change per g of fuel burnedObservations
Pentane53060no smokeHexane64057very small amount of smoke Octane85555small amount of smokeDecane105752large amount of smokeDodecane126043very large amount of smoke

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